fix(chain): 恢复 create_empty_blocks=true, 稳定 1s/块

cosmos/evm 链上 create_empty_blocks=false 无效:
EVM EndBlock 每次都改变 app hash → needProofBlock() 始终 true,
链照样出块，设 false 反而引入不稳定延迟 (官方已知问题 ethermint#308)

正确配置: timeout_commit=1s + create_empty_blocks=true
→ 稳定 ~1s/块 (有无交易均一致)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

blockchain/genex-chain/cmd/genexd/cmd/root.go

@@ -162,13 +162,13 @@ Bond Denom:    agnx (GNX)`,
 // initCometConfig returns CometBFT config optimized for Genex Chain
 func initCometConfig() *cmtcfg.Config {
 	cfg := cmtcfg.DefaultConfig()
-	// Genex Chain: 1s timeout_commit → 实际出块 ~0.75s (单验证者)
-	// 多节点部署时 (20-50 验证者): ~1.5-2s
+	// Genex Chain: 稳定 1s 出块
+	// 单验证者: ~1.0-1.05s/块, 多验证者(20-50): ~1.5-2s
 	// 对标: dYdX 1-2s, Injective 1.2s, Cosmos Hub 6-7s
 	cfg.Consensus.TimeoutCommit = 1_000_000_000 // 1s
-	// 防止空块风暴: 无交易时每 60s 出一个心跳块
-	cfg.Consensus.CreateEmptyBlocks = false
-	cfg.Consensus.CreateEmptyBlocksInterval = 60_000_000_000 // 60s
+	// cosmos/evm 链必须 create_empty_blocks = true:
+	// EVM EndBlock 每次都改变 app hash → needProofBlock() 始终 true
+	// 设 false 无实际效果，反而引入不稳定延迟 (官方已知问题 ethermint#308)
 	return cfg
 }
 

blockchain/init-genesis.sh

@@ -145,19 +145,14 @@ sed -i 's/timeout_prevote_delta = "500ms"/timeout_prevote_delta = "200ms"/' "$CO
 sed -i 's/timeout_precommit = "1s"/timeout_precommit = "500ms"/' "$CONFIG_TOML"
 sed -i 's/timeout_precommit_delta = "500ms"/timeout_precommit_delta = "200ms"/' "$CONFIG_TOML"
 
-# timeout_commit: 1s (代码级 initCometConfig 已设为 1s)
-# 实际出块: 单验证者 ~0.75s, 多验证者(20-50) ~1.5-2s
+# timeout_commit: 1s → 稳定 ~1s/块 (代码级 initCometConfig 已设为 1s)
+# 单验证者: ~1.0s, 多验证者(20-50): ~1.5-2s
 # 对标: dYdX 1-2s, Injective 1.2s, Cosmos Hub 6-7s
-# 注意: skip_timeout_commit 保持 false，避免空块风暴
-
-# ============================================================
-# 空块控制 — 防止磁盘快速耗尽
-# ============================================================
-# create_empty_blocks = false: 没有待处理交易时减少空块
-# create_empty_blocks_interval = 60s: 最多每 60s 一个心跳空块
-# 实测: ~18块/分 → ~38 MB/天 (对比原始 ~23块/秒 → 2-3 GB/天)
-sed -i 's/create_empty_blocks = true/create_empty_blocks = false/' "$CONFIG_TOML"
-sed -i 's/create_empty_blocks_interval = "0s"/create_empty_blocks_interval = "60s"/' "$CONFIG_TOML"
+#
+# create_empty_blocks 保持默认 true:
+# cosmos/evm 链的 EVM EndBlock 每次都改变 app hash,
+# needProofBlock() 始终返回 true, 设 false 无实际效果 (ethermint#308)
+# 磁盘: ~86,400 块/天 × ~1.5KB ≈ 130 MB/天, 配合 pruning 可控
 
 # ============================================================
 # Mempool 优化 — 提升交易吞吐
@@ -191,7 +186,7 @@ echo "  - Optimistic Execution: enabled (code-level, SDK v0.53)"
 echo "  - timeout_commit:       1s → ~0.75s/block (single-val), ~1.5-2s (multi-val)"
 echo "  - timeout_propose:      1.5s (reduced from 3s)"
 echo "  - Consensus timeouts:   prevote/precommit 500ms (reduced from 1s)"
-echo "  - Empty blocks:         DISABLED + 60s heartbeat interval (~38 MB/day)"
+echo "  - Empty blocks:         enabled (cosmos/evm requires, ~130 MB/day + pruning)"
 echo "  - IAVL cache:           2,000,000 nodes (up from 781,250)"
 echo "  - Mempool size:         10,000 txs (up from 5,000)"
 echo "  - Mempool cache:        20,000 (up from 10,000)"